C++11多线程小记

C++11标准库里添加了多线程和锁的库，简单的使用小例：

#include <iostream>
using namespace std;
#include<Windows.h>
#include<thread>

void PrintThread( char c)
{
    
    for( int i = 0; i < 1000; i++ )
    {
        cout << c;
        cout.flush();
		Sleep(1);//将线程处于睡眠状态
    }
}


int main()
{
	std::thread *a = new std::thread(PrintThread, 'a');
	std::thread *b = new std::thread(PrintThread, 'b');


	a->join();
	b->join();
	
    char c;
    cin >> c;
    
    return 0;
}

引入锁：

#include <iostream>
using namespace std;
#include<mutex>
#include<thread>
std::mutex m;

void PrintThread( char data )
{
   
    char c = data;

    for( int i = 0; i < 200; i++ )
    {
        m.lock();
        for( int j = 0; j < 50; j++ )
        {
            cout << c;
            cout.flush();
        }
        m.unlock();
    }
}


int main()
{
	std::thread a,b;

    //std::thread *a = new std::thread( PrintThread, 'a' );
    //std::thread *b = new std::thread( PrintThread,'b' );

	a = std::thread(PrintThread, 'a');
	b=  std::thread(PrintThread, 'b');
	a.join();
	b.join();

    char c;
    cin >> c;

    return 0;
}